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Question: 

Two polarizers are oriented at $42.0 ^\circ$ to one another. Light polarized at a $21.0 ^\circ$ angle to each polarizer passes through both. What is the transmitted intensity (%)?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

48.1%

Giancoli 7th Edition, Chapter 24, Problem 63

(2:48)

Chapter 24, Problem 63 is solved.

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